Articulated electric-locomotive-truck structure



INVENTORS Alber? H.PendleTon and WITNESSES:

BY Charles Jo blow ATTORNEY Patented Mar. 2, 1926.

UNITED STATES PATENTv OFFICE.

ALBERT H. PENDLETON, OF WILKINSBURG, ANI) CHARLES JABLOW, OF EAST PITTS-BURGH, PENNSYLVANIA, ASSIGNORS T WESTINGHOUSE ELECTRIC AND MANU-FACTURING COMPANY, A CORPORATION 0F PENNSYLVANIA.

ARTICULATED ELECTRIC-LOCOMOTIVE-TRUCK STRUCTURE.

Application led September 27, 1922. Serial No. 590,782.

To all whom t may concer/nf.

Be it known that we, ALBERT I-I. PnNDLn- TON, a citizen of the UnitedStates, and a resident ot IVillinsburg, in the county of Allegheny andState of Pennsylvania, and CHARLES JABLow, a citizen ot the UnitedStates, and a resident ot East Pittsburgh, in the county of Alleghenyand State of Pennsylvania, have invented a new and useful Improvement inArticulated Electric-Locon1otive-Truck Structures, of which the'ollowing is a specification. I

Our invention relates to electric railway vehicles, more especially totruck construction ot an improved type to permit the adaptation otarticulated trucks to a single locomotive-body support.

It is among the objects of this invention to provide anarticulated-truck construction which shall give a three-point support tothe cab member and which shall provide lateral stability ot the cab orlocomotive body without excessive straining ot the trame structure andthe wearing members.

It is a further object of this invention to provide a connection betweenthe main body support and the truck holsters which shall be of simpleconstruction, efficient in operation and mechanically durable.

In a three-truck articulated-type construction, the center of rotationot the respective truck members is about the point of their connectionswhich effects excessive thrusts on the rear wheels ot the leading andsuccessive truck members when encountering or leaving a tangent to acurve. It is, therefore, essential to provide a yielding conneetionbetween the cab frame and the supporting bolster trames ot the trucks topermit relative lateral and longitudinal movements therebetween andyielding connections between the respective trucks to provide treedom ofarticulation. In our present inven tion, we provide a center-pinconstruction which will permit such relative movements in the centerbearings of the truck supports when rounding a curve. f

In the accompanying drawing, constituting a part hereof and in whichlike reterence characters designate like parts,

Fig. l is a plan view ot' an articulatedtruck system provided withcenter-pin sup ports embodying the principles ot this inl vention, and

Fig. 2 is a side elevational view thereot showing the cab frame mountedon the truck members.

)veferring to Fig. 2, the structure consists of a plurality of truckframes l, 2 and il provided with wheeled axles it. The trucks l, 2 and 3are connected by suitable hinges 6 which provide interchangeability ofthe trucks and relative movement therebetween.

rIhe trames ot the front and rear trucks l and 3, respectively, areprovided with center bearing plates 8 having annular openings 9 adaptedto receive center pins l0 which iare rotatably mounted therein inco-operative alinement with center bearing plates 1l secured to thesupporting or under trame l2 of a locomotive.

Under trame 12 adjacent the center truck 2 is provided witha cross-tie13 having a pair of guide ways 15 secured thereto. The guide waysprovide a transverse slot or recess 16 which is adapted to receive aprojecting tongue 17 ot al centerpin 18 mounted on the supporting truck2.

Referring to Fig. l, the construction of 'the Vcenter pin is such as toconstrain the movement of the frame 12 with respect to the truckmembers, which movement is effected by the lateral and longitudinalguides and cross-heads in the cab frame support and truck cross-ties.The center pin supports 8 ot the front and rear truclrs l and 3,respectively, are adapted to rotatably secure the center pins 10 whichare provided witl an elongated slot or opening 19 adapted to re ceive acorrespondingly shaped tongue 20 secured to the bearing plates ll offthe cab under trame 12. The center truck 2 is ot the same constructionas the trucks l and 3 but the tongue 17 o'f the truck 2 is disposedtransversely in the guide slot 1G.

The function of the center pin construeN tion is obvious from theillustration in that the longitudinal or transverse position of thetongues limits the movement of the cab frame with respect to the trucksand, as shown in the drawing, the center-truckpin guide is such as toprovide lateral movement with respect to the frame, whereas, the frontand rear trucks permit ot longitudinal movement.

This yielding connection between the cab and its supporting truckspermits the use of a rigid cab frame without eltecting unusual stressingthereon as the ,truck members round a curve and also provides lateralstability of the locomotive body.

XVe claim as our invention:

l. The combination with a plurality of articula-ted trucks, of a vehiclebody supported thereon, a connection between the body and one of thetrucks to permit relative lateral movement, and a connection between thebody and vother trucks :to permit relative longitudinal movement.

2. The combination with a plurality of articulated trucks, of a vehiclebody supported thereon, a connection between the body and the centertruck to permit .relative lateral movement, and a connection between thebody and the front and rear trucks to permitrelative longitudinalmovement.

3. The combi-nation with a plurality of articulated trucks, lof avehicle body supported thereon, a connection between the body and thecenter truck to permit :relative lateral movement, and a connectionbetween the body and the front and rear trucks to permit relativelongitudinal movement, said connection comprising a movable center pinin the center of the respective truck bolsters which are adapted toeoactively engage the vehicle body.

4f. The combination with a plurality of articulated trucks, of a vehiclebody supported thereon, a connection between the body and the centertruck to permit relative lateral movement, and a connection between thebody and the front and rear trucks to permit relative longitudinalmovement, said connections comprising center pins pivotally mounted inthe respective truck bolsters which are cooperatively engaged in guideslots provided in the vehicle body.

5. The combination with a plurality of articulated trucks, of a vehiclebody supported thereon, a connection between the body and the centertruck to permit relative lateral movement, and a connection between thebody and the front and rear trucks to permit relative longitudinalmovement, said connections comprising `center pins rpivot-ally mountedin the respective truck bolsters, the center one of which is; adapted toengage a pair of transversely disposed guide ways secured to the vehiclebody andthe other pins beingin engagement lwith longitudinal guide waysol said vehicle.

In testimony whereof, we-have hereunto subscribed our names this 21stday ot' September, 1922.

ALBERT H. PENDLETON. CHARLES JABLOVV.

